| 摘要 |
<p>PURPOSE:To improve the operability and the workability of a touch keyboard at occurrence of an error by switching automatically the screen to a new screen where the image of a clear key is shown when an error state is set due to the misinput of a key. CONSTITUTION:If the misinput of a key occurs on a liquid crystal touch key board 21, the display screen of a liquid crystal display device 21b is switched to a screen showing the image of a clear key only. Thus the error is canceled with the input of the clear key. Thus it is possible to omit the conventional complicated operations where the display screen is shifted before and after one by one screen and the screen showing the image of the clear key is selected. In addition, an operator is urged to push the clear key since this key has a size larger than other keys. Consequently, the error caused by the misinput of a key can be simply canceled and the operating efficiency is improved.</p> |
